S3 Smart Sun Sensor
Leonardo SpA (Space Division)
Two-axis APS-based sun sensor: 128x128 deg FOV, <0.02 deg accuracy, 10Hz, 330g, 112x12x43mm, ITAR-free. Combines fine and coarse sensing in one unit. Flight on ISS Columbus, Galileo, Lisa Pathfinder.
Technical specifications
- Detector
- APS CMOS
- FOV
- 128 x 128 deg (resizable)
- Accuracy (2-sigma)
- <0.02 deg
- Resolution
- <0.005 deg
- Update Rate
- 10 Hz
- Altitude Range
- 3,000-40,000 km (interplanetary up to 50 AU)
- Spinning Rate
- Up to 100 rpm
- Dimensions
- 112 x 12 x 43 mm
- Mass
- <330 g
- Supply (pre-regulated)
- +5V, <700 mW
- Supply (unregulated)
- 24-50V, <1 W
- Interface
- RS-422 (DS48 or DS16 serial)
- Radiation
- 100 kRad (300 kRad optional); detector up to 1 Mrad; SEU tolerant, latch-up free
- Operating Temperature
- -25 to +60 deg C
- Design Lifetime
- >15 years GEO
- TRL
- 9 (ISS Columbus, Galileo, Lisa Pathfinder)
About
The Leonardo S3 (Smart Sun Sensor) is a two-axis solar sensor based on an APS (Active Pixel Sensor) CMOS detector, combining the functions of fine and coarse sun sensors in a single compact unit. Field of view is 128×128 degrees (resizable), with less than 0.02-degree accuracy (2-sigma) and 0.005-degree resolution. Update rate is 10 Hz. Designed for Earth observation satellites, GEO telecom spacecraft, interplanetary missions up to 50 AU, and spinning spacecraft up to 100 rpm. Power consumption is less than 700 mW from 5V pre-regulated supply or less than 1W from 24-50V unregulated. Mass is 330g in 112x12x43mm package. ITAR-free. Flight heritage includes ISS Columbus module (since Feb 2008), ESA GOCE, SICRAL-1B, and Lisa Pathfinder.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.
